The book Subspecies Status of Two Central American Sloths by Hall, E. Raymond and Kelson, Keith R. is the result of a study of the biology and ecology of two species of sloths common in Central America. The book reveals important aspects of their lives, shows unique features of their behavior and features of the environment where they live. The authors' research reveals important information about biodiversity and helps preserve these wonderful animals for future generations. The work is characterized by a deep analysis and a careful approach to the study of nature, and also offers new approaches to the study and protection of these unique species.